Just some feedback. I have added the following lines to my code : protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            if (DotNetNuke.Framework.AJAX.IsInstalled())
            {
                DotNetNuke.Framework.AJAX.RegisterScriptManager();
            }           
        } 

and still no love. Asof today my module doesn't want to work at all. On my development environment it works great. Any ideas?

Thanks for the replys, everything was working fine and then it just systematically stopped working. The module loads but the ajax gridview rowcommands don't seem to fire. I have tried restarting the server. But still the same.

I have checked and the ajax settings are enabled under host settings.